Cardiology Question 13 Instructor

What are the causes of right axis deviation (RAD) on ECG?

1. Right ventricular hypertrophy
2. Right bundle branch block
3. Left posterior hemiblock
4. Lateral infarction
5. Dextrocardia
6. Ventricular ectopic rhythms
7. WPW/ Preexcitation / Bypass tract
8. Mechanical shifts – inspiration, emphysema
9. Normal variation

Note 1: Left posterior hemiblock is a diagnosis of exclusion of RAD when all the other causes are excluded.